US20160302585A1 - Tunable spring mattress and method of making same - Google Patents
Tunable spring mattress and method of making same Download PDFInfo
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- US20160302585A1 US20160302585A1 US15/195,307 US201615195307A US2016302585A1 US 20160302585 A1 US20160302585 A1 US 20160302585A1 US 201615195307 A US201615195307 A US 201615195307A US 2016302585 A1 US2016302585 A1 US 2016302585A1
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- spring
- mattress
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- fiber structure
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- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47C—CHAIRS; SOFAS; BEDS
- A47C27/00—Spring, stuffed or fluid mattresses or cushions specially adapted for chairs, beds or sofas
- A47C27/12—Spring, stuffed or fluid mattresses or cushions specially adapted for chairs, beds or sofas with fibrous inlays, e.g. made of wool, of cotton
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- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47C—CHAIRS; SOFAS; BEDS
- A47C27/00—Spring, stuffed or fluid mattresses or cushions specially adapted for chairs, beds or sofas
- A47C27/04—Spring, stuffed or fluid mattresses or cushions specially adapted for chairs, beds or sofas with spring inlays
- A47C27/06—Spring inlays
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- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47C—CHAIRS; SOFAS; BEDS
- A47C27/00—Spring, stuffed or fluid mattresses or cushions specially adapted for chairs, beds or sofas
- A47C27/04—Spring, stuffed or fluid mattresses or cushions specially adapted for chairs, beds or sofas with spring inlays
- A47C27/06—Spring inlays
- A47C27/061—Spring inlays of adjustable resiliency
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- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47C—CHAIRS; SOFAS; BEDS
- A47C27/00—Spring, stuffed or fluid mattresses or cushions specially adapted for chairs, beds or sofas
- A47C27/04—Spring, stuffed or fluid mattresses or cushions specially adapted for chairs, beds or sofas with spring inlays
- A47C27/06—Spring inlays
- A47C27/062—Spring inlays of different resiliencies
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- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47C—CHAIRS; SOFAS; BEDS
- A47C27/00—Spring, stuffed or fluid mattresses or cushions specially adapted for chairs, beds or sofas
- A47C27/04—Spring, stuffed or fluid mattresses or cushions specially adapted for chairs, beds or sofas with spring inlays
- A47C27/06—Spring inlays
- A47C27/063—Spring inlays wrapped or otherwise protected
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- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47C—CHAIRS; SOFAS; BEDS
- A47C27/00—Spring, stuffed or fluid mattresses or cushions specially adapted for chairs, beds or sofas
- A47C27/04—Spring, stuffed or fluid mattresses or cushions specially adapted for chairs, beds or sofas with spring inlays
- A47C27/06—Spring inlays
- A47C27/07—Attaching, or interconnecting of, springs in spring inlays
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- D—TEXTILES; PAPER
- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
- D04H13/00—Other non-woven fabrics
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- D—TEXTILES; PAPER
- D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B2331/00—Fibres made from polymers obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. polycondensation products
- D10B2331/04—Fibres made from polymers obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. polycondensation products polyesters, e.g. polyethylene terephthalate [PET]
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T442/00—Fabric [woven, knitted, or nonwoven textile or cloth, etc.]
- Y10T442/10—Scrim [e.g., open net or mesh, gauze, loose or open weave or knit, etc.]
- Y10T442/184—Nonwoven scrim
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T442/00—Fabric [woven, knitted, or nonwoven textile or cloth, etc.]
- Y10T442/60—Nonwoven fabric [i.e., nonwoven strand or fiber material]
Landscapes
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Mattresses And Other Support Structures For Chairs And Beds (AREA)
Abstract
A mattress includes a spring extending between first and second points to provide a first spring rate in a first direction. A polymer fiber structure is provided between the first and second points and adjoins the spring. The polymer fiber structure includes fibers interlinked with one another to provide the second spring rate in the first direction. An example method of manufacturing a mattress is provided that includes arranging springs to provide a mattress innerspring. A polymer fiber structure is introduced in a first state to the innerspring to provide an assembly. The assembly is further processed and the polymer fiber structure is simultaneously altered from the first state to a second state.
Description
- This application is a continuation of U.S. application Ser. No. 14/619,427, filed Feb. 11, 2015, which is a continuation-in-part of prior U.S. application Ser. No. 14/332,732, filed Jul. 16, 2014 (now issued as U.S. Pat. No. 8,959,686), which is a continuation of prior U.S. application Ser. No. 13/157,540, filed Jun. 10, 2011 (now issued as U.S. Pat. No. 8,813,286). The '540 Application claims the benefit of U.S. Provisional Application Nos. 61/353,287 and 61/491,438, respectively filed on Jun. 10, 2010 and May 31, 2011.
- The '427 Application, the '732 Application, the '540 Application, the '287 Provisional Application, and the '438 Provisional Application are herein incorporated by reference in their entirety.
- This disclosure relates to mattresses, and more particularly, the disclosure relates to the use of polymer fiber structures for tuning characteristics of the mattress. Methods of tuning a mattress are also disclosed.
- Most sitting and sleeping surfaces today have a combination of coil springs and foam. Manufacturers attempt to tune the feel of the spring/foam combination to achieve durability and comfort. In most or all instances manufacturers attempt to refine the tuning characteristics of the mattress or seating cores by manipulating motion transfer, vibration, damping, zones within the seating or sleeping surface, and/or load/deflection curves.
- Foam is used in most mattresses. Foam chemistries have been manipulated to create a conventional inexpensive polyurethane foam core to a fairly expensive viscoelastic foam core. Foam has also been used on the outside of a spring core assembly, or innerspring, as topper layers and as rails or skirts. Current typical spring core constructions might also include a bonnell construction, which is fairly inexpensive, or a complex pocket coil construction, which is a spring within a spring. Another type of construction is to provide a foam slab or core without using a coil spring core.
- Almost all spring core mattresses adjust tuning characteristics by connecting the springs a certain way or giving the spring a certain predefined stress. However, some mattresses have utilized foam structures inserts in the spring core to tune the spring core assembly. Such mattresses are difficult to process during manufacture, are expensive and lack recyclability.
- A mattress includes a spring extending between first and second points to provide a first spring rate in a first direction. A polymer fiber structure is provided between the first and second points and adjoins the spring. The polymer fiber structure includes fibers interlinked with one another to provide the second spring rate in the first direction.
- An example method of manufacturing a mattress is provided that includes arranging springs to provide a mattress innerspring. A polymer fiber structure is introduced in a first state to the innerspring to provide an assembly. The assembly is further processed and the polymer fiber structure is simultaneously altered from the first state to a second state.
- The disclosure can be further understood by reference to the following detailed description when considered in connection with the accompanying drawings wherein:
-
FIG. 1 is a flow chart of an example method of manufacturing the disclosed mattress. -
FIG. 2A is a schematic of a portion of the manufacturing process for spring mattresses depicted in the flow chart ofFIG. 1 . -
FIG. 2B illustrates fibers interlinked with one another. -
FIG. 3A is a top elevational view of an example spring core assembly. -
FIG. 3B is a perspective view of the spring core assembly illustrated inFIG. 3A in an initial installed condition. -
FIG. 3C is an enlarged perspective view of the spring core assembly shown inFIG. 3B . -
FIG. 4 is a perspective view of a portion of an alternative spring core assembly construction. -
FIG. 5A is a perspective view of a portion of another alternative spring core assembly construction. -
FIG. 5B is a perspective view of the spring core assembly shown inFIG. 5A in a post-compressed condition. -
FIG. 6A is a schematic view of a tuning block having varying densities. -
FIG. 6B is a schematic view of discrete blocks adhered to one another to provide an integrated tuning block. -
FIG. 6C is a schematic view of a polymer fiber structure having directionally oriented fibers. -
FIG. 7 illustrates a spring assembly. -
FIG. 8A is a schematic view of yet another polymer fiber structure, which includes a first section having directionally oriented fibers, and a second section including a netted layer. -
FIG. 8B is a schematic view of another polymer fiber structure including a first section having directionally oriented fibers and a second section including a netted layer. -
FIG. 9 is a close-up view of the netted layer ofFIG. 8 . - The disclosed mattress includes a polymer fiber structure that is introduced into the spring core assembly during the manufacturing process. In this disclosure, the terms “tuning block,” “batt,” and “polymer fiber structure” are used interchangeably. The polymer fiber structure adjust the tuning characteristics of the mattress to provide desired motion transfer, desired vibration, desired damping, desired zones within the seating or sleeping surface, and/or desired load/deflection curves.
- In one example, the polymer fiber structure is a is an “engineered fiber,” for example, a polyester fiber material. Other fiber types may include polypropylene, nylon, elastomers, co-polymers and its derivatives, mono-filaments, or bi-component filaments having different melting points. One type of polyester fiber includes a core polyester fiber sheathed in a polyester elastomer. Engineered fibers could be solid or hollow and have cross-sections that are circular or triangular. Another type of polyester fiber has a tangled, spring-like structure. Unlike the foam typically used in mattress construction, polyester is fully recyclable.
- The fibers and their characteristics are selected to provide the desired tuning characteristics. One measurement of “feel” for a cushion is the Indentation Load Deflection, ILD, which is determined using industry guidelines. The ILD is the amount of pounds (measured as resistant force) required to compress a 4 inch thick, 15 inch×15 inch sample to 3 inches (or 25% of original height) . In one example, a desired fiber blend provides a batt having a thickness of about 0.5-4.0 inches, an ILD of about 45-110 and a density of about 1.2-3.0 pounds per cubit foot.
- At some point during manufacturing, for example, during the spring core manufacturing process, the polymer fiber structure is heated to interlink the fibers to one another to provide a more resilient structure. The fibers may be randomly oriented or directionally oriented, depending upon the desired characteristic.
-
FIG. 1 illustrates anexample method 10 of manufacturing a spring core mattress assembly. Generally speaking, springs are arranged (block 12) with tuning blocks (block 16) at a common assembly area (block 18). This will be accomplished by first pre-cutting a certain form or shape from a blank, for example, of polyester material. This block material will have a specific density and blend to provide the desired tuning characteristics. - In one example, the pre-cut form is then introduced during the spring manufacturing process. Before and during the stitching process material can be introduced that will not inhibit the stitching process but will get embedded into the spring mechanism.
- The springs are stitched together using wire (block 14) to provide a spring core assembly at the
common assembly area 18. Typically each coil is made first and then ‘stitched’ together in the ‘x’ and ‘y’ and ‘z’ coordinate with additional wire. In one example, the coil spring core assembly is not arranged and wired together before the tuning blocks are inserted. Instead, the tuning blocks are inserted during spring core assembly. -
Steps FIG. 2A . Individual springs 28, for example, supplied by a chute, are arranged in an assembly area (block 18) to provide anarray 30 of coil springs. Thespring 28 is a metallic coil spring, for example, helical and general cylindrical in shape. It should be understood that the spring can also be constructed of plastic. Atuning block 36 having desired characteristics, such as density, may be provided by blendingdifferent polyester fibers - The
tuning block 36 may be provided in any suitable shape, for example, in a rectangular block. The polymer fiber structure is introduced in a first state to the innerspring to provide an assembly. For example, the first state may correspond to an uncured condition and/or an uncompressed condition. The assembly is further processed, for example, heating and/or compressing, and the polymer fiber structure is simultaneously altered from the first state to a second state. The second state may correspond to a cured condition and/or a post-compressed condition. - The arrays of
coils 30 and tuning blocks 36 are arranged in a desired configuration to provide desired overall spring core assembly tuning in a coil/tuning block configuration 38. Three example configurations are illustrated inFIGS. 3A, 4 and 5 , although other configurations may be used as well. The individual coils 28 are secured to one another withwiring 40 to provide a tunedspring core assembly 42. The tuning blocks 36 may be arranged in the same direction as and/or transverse to the direction of thewires 40. - The polymer fiber structure is provided by an elongated batt having a generally rectangular cross-section. The batt has an initial installed condition, with the generally rectangular batt provided between rows of
springs 28. - The
spring core assembly 42 is shown in more detail inFIGS. 3A and 3B . Thespring core assembly 42 has a length L and a width W and height H providing x, y, z directions. Thespring 28 extends between first andsecond points polymer fiber structure 36 is provided between the first andsecond points spring 28. Thepolymer fiber structure 28 includingfibers 32 and/or 34 interlinked with one another at bond points 35 (seeFIG. 2B ) to provide the second spring rate in the first direction H. - Tuning blocks 36A-36C having different densities than one another, for example, may be provided between the
arrays 30 of coil springs. As a result, different locations of the mattress or support surface may be tuned based upon the application. As illustrated inFIGS. 4 and 5A , the tuning blocks (e.g., 36A, 36W-36Z) can be configured in various arrangements depending upon the desired spring core assembly tuning. - Returning to
FIG. 1 , typically the spring core assembly is sent to an oven (block 20) in which the spring core assembly is heated at approximately 400° F. for several hours. The heating operation anneals the coil springs to provide desired spring characteristics. At least some of the fibers may be a heat activated binder, for example. The heat activated binder may be formulated to melt during theheating step 20, providing the desired tuning block characteristics subsequent to the heating step. - During heating, the fibers of the
batt 36 may become melted to thespring 28 in a region 41 (seeFIG. 3C ), which provides improved damping and vibration resistance. - Subsequent to heating, the spring core assembly is finished (block 22), for example, by providing topper layers, quilting, insulator pad, base pad, rail, and aesthetic cover to provide a finished mattress. These components also may be constructed of polyester material. The mattresses are stacked upon one another and compressed (block 24) to provide a compact arrangement suitable for shipping, as generally indicated at
block 26. -
FIG. 5B illustrates atuning block 36 subsequent to the compression indicated atblock 24 inFIG. 1 . The batt has a generally saw-toothed cross-section with peaks or wedges of the saw tooth arranged between coils of thesprings 28 in a post-compressed condition. Once compressed,wedges 46 of the tuning blocks 36 are formed between coil turns 44 of thespring coil arrays 30. This may be desirable in that the tuning blocks 36 are able to better provide their tuning characteristics as thecoils 28 are compressed during use. Thus, permanently deformed polymer fiber structure is provided between coils of the springs in the post-compressed condition. - Referring to
FIGS. 6A and 6B , tuning blocks 136, 236 are provided that have a varying density. In the example illustrated inFIG. 6A , thetuning block 136 includes section orregions FIG. 6B , thetuning block 236 is constructed fromdiscrete blocks interfaces 62, such as by gluing theblocks - In one example shown in
FIG. 6C , the fibers 32 (and/or fibers 34) of apolymer fiber structure 336 are directionally oriented along the first direction H to provide an increased spring rate that provides the desired load/deflection curve, as compared to a spring rate of a polymer fiber structure comprising only randomly oriented fibers. In this example, thefibers 32 are oriented along a common direction, which is parallel to a height of thepolymer fiber structure 336. In one example the directionally orientedfibers 32 are polyester fibers.Springs 28 are arranged to provide an innerspring orspring core assembly 42 having aperimeter 43, as shown inFIG. 3A . The polymer fiber structure 336 (seeFIGS. 3A and 6C ) is arranged at theperimeter 43 to provide a skirt or rail that is relatively rigid to better resist deflection from the weight of a sitting user. Although only one skirt is shown for simplicity, typically the skirt would be provided about the entire perimeter. Thepolymer fiber structure 336 may be positioned at other locations within the mattress to provided desired rigidity. - In one example, the polymer fiber structure is arranged inside of the
spring 28 to provide aspring assembly 128, as illustrated inFIG. 7 . Theassembly 128 may include anenclosure 33, such as a fine mesh, containing loose, unbonded fibers 32 (and/or fibers 34) in an uncured state within thespring 28. During heating, which may occur while heating the entire spring core assembly, the fibers become interlinked in a cured state. -
FIG. 8A illustrates another examplepolymer fiber structure 336′, which may be used as a perimeter rail. As shown inFIG. 8A , thepolymer fiber structure 336′ includes afirst section 64 and asecond section 66 adjacent one another relative to thewidth 336W of thepolymer fiber structure 336′. In this example, thefirst section 64 consists of directionally orientedfibers 32′, which are the same as the directionally orientedfibers 32 discussed above relative to thepolymer fiber structure 336 ofFIG. 6C . Thesecond section 66 is provided by a three-dimensional netted layer of a plurality of helically arrangedthermoplastic resin filaments 68. Each of thethermoplastic resin filaments 68 is partially thermally bonded to at least one of the otherthermoplastic resin filaments 68, at locations 70 (FIG. 9 ), such that thethermoplastic resin filaments 68 are randomly entangled with one another. One example of the netted layer of thesecond section 66 is disclosed in U.S. Pat. Nos. 7,625,629 and 7,993,734 to Takaoka, the entirety of which are herein incorporated by reference. - The first and
second sections bonding layer 72 in one example. Thebonding layer 72 may be a resin or another type of appropriate material configured to bond adjacent polymer structures. The addition of the netted layer of thesecond section 66 increases the durability of thepolymer fiber structure 336′. - While
FIG. 8A illustrates thefirst section 64 adjacent thesecond section 66 relative to thewidth 336W of thepolymer structure 336′, thefirst section 64 could be positioned above or below, relative to the height H, thesecond section 66.FIG. 8B illustrates anexample polymer structure 336″ wherein thefirst section 64 is positioned below, relative to the height H, of thesecond section 66. In this example, the directionally orientedfibers 32″ of thefirst section 64 are arranged such that they are substantially parallel to thewidth 336W. Alternatively, thefirst section 64 may include directionally oriented fibers that are arranged substantially parallel to the height H. Again, thefirst section 64 can be positioned above, below, or on a lateral side of thesecond section 66. Additionally, regardless of the position of thefirst section 64, thefirst section 64 can include directionally oriented fibers that are either oriented parallel to the height H or parallel to thewidth 336W. - Although an example embodiment has been disclosed, a worker of ordinary skill in this art would recognize that certain modifications would come within the scope of the claims. For that reason, the following claims should be studied to determine their true scope and content.
Claims (18)
1. A mattress comprising:
an innerspring including a plurality of springs; and
a polymer fiber structure arranged at least partially inside one of the springs to provide a spring assembly, the spring assembly including an enclosure containing interlinked fibers.
2. The mattress as recited in claim 1 , wherein the enclosure is provided by a mesh.
3. The mattress as recited in claim 1 , wherein the interlinked fibers are polymer fibers.
4. The mattress as recited in claim 1 , wherein the enclosure at least partially encloses the spring, and at least some of the interlinked fibers are provided within the spring.
5. The mattress as recited in claim 1 , wherein the mattress includes a plurality of polymer fiber structures arranged at least partially inside a respective one of the plurality of springs to provide the mattress with a plurality of spring assemblies.
6. The mattress as recited in claim 5 , wherein each spring of the mattress is at least partially enclosed by a respective polymer fiber structure.
7. The mattress as recited in claim 1 , wherein the spring provides a first spring rate in a first direction, and wherein the polymer fiber structure provides a second spring rate different than the first spring rate in the first direction.
8. The mattress as recited in claim 7 , wherein the first direction is a height direction of the mattress.
9. The mattress as recited in claim 7 , wherein the polymer fiber structure includes fibers interlinked with one another at bond points to provide the second spring rate.
10. The mattress as recited in claim 1 , wherein the plurality of springs are metallic coil springs.
11. The mattress as recited in claim 10 , wherein the plurality of springs are stitched together with wiring.
12. A method of forming a spring assembly, comprising:
heating a spring assembly, the spring assembly including a spring and a polymer fiber structure arranged at least partially inside the spring, the polymer fiber structure initially including an enclosure containing a plurality of loose, unbonded fibers within the spring, wherein heating the spring assembly causes the fibers within the spring to become interlinked with one another.
13. The method as recited in claim 12 , wherein the enclosure is provided by a mesh.
14. The method as recited in claim 12 , wherein the fibers are polymer fibers.
15. The method as recited in claim 12 , wherein the spring provides a first spring rate in a first direction, and wherein the polymer fiber structure provides a second spring rate different than the first spring rate in the first direction.
16. The method as recited in claim 15 , wherein the first direction is a height direction.
17. The method as recited in claim 15 , wherein the polymer fiber structure includes fibers interlinked with one another at bond points to provide the second spring rate.
18. The method as recited in claim 12 , wherein the spring is a metallic coil spring.
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
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US15/195,307 US9867477B2 (en) | 2010-06-10 | 2016-06-28 | Tunable spring mattress and method of making same |
US15/834,551 US20180092467A1 (en) | 2010-06-10 | 2017-12-07 | Tunable spring mattress and method of making same |
US15/880,582 US20180146791A1 (en) | 2010-06-10 | 2018-01-26 | Tunable spring mattress and method of making same |
Applications Claiming Priority (6)
Application Number | Priority Date | Filing Date | Title |
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US35328710P | 2010-06-10 | 2010-06-10 | |
US201161491438P | 2011-05-31 | 2011-05-31 | |
US13/157,540 US8813286B2 (en) | 2010-06-10 | 2011-06-10 | Tunable spring mattress and method of making same |
US14/332,732 US8959686B2 (en) | 2010-06-08 | 2014-07-16 | Tunable spring mattress and method of making same |
US14/619,427 US9392877B2 (en) | 2010-06-10 | 2015-02-11 | Tunable spring mattress and method of making same |
US15/195,307 US9867477B2 (en) | 2010-06-10 | 2016-06-28 | Tunable spring mattress and method of making same |
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US14/619,427 Continuation US9392877B2 (en) | 2010-06-10 | 2015-02-11 | Tunable spring mattress and method of making same |
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US15/834,551 Continuation US20180092467A1 (en) | 2010-06-10 | 2017-12-07 | Tunable spring mattress and method of making same |
US201715834511A Continuation | 2010-06-10 | 2017-12-07 |
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US20160302585A1 true US20160302585A1 (en) | 2016-10-20 |
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US15/834,551 Abandoned US20180092467A1 (en) | 2010-06-10 | 2017-12-07 | Tunable spring mattress and method of making same |
US15/880,582 Abandoned US20180146791A1 (en) | 2010-06-10 | 2018-01-26 | Tunable spring mattress and method of making same |
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US15/880,582 Abandoned US20180146791A1 (en) | 2010-06-10 | 2018-01-26 | Tunable spring mattress and method of making same |
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US20200037796A1 (en) * | 2017-02-13 | 2020-02-06 | Reissi Holdings Pty Ltd | Pillow |
US11389008B2 (en) * | 2017-07-26 | 2022-07-19 | Bo Nie | Foldable tension spring mattress |
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2015
- 2015-02-11 US US14/619,427 patent/US9392877B2/en active Active
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2016
- 2016-06-28 US US15/195,307 patent/US9867477B2/en active Active
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2017
- 2017-12-07 US US15/834,551 patent/US20180092467A1/en not_active Abandoned
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2018
- 2018-01-26 US US15/880,582 patent/US20180146791A1/en not_active Abandoned
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US20120180224A1 (en) * | 2011-01-14 | 2012-07-19 | Demoss Larry K | Mattress constructions with densified fiber components |
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US9392877B2 (en) | 2016-07-19 |
US9867477B2 (en) | 2018-01-16 |
US20180146791A1 (en) | 2018-05-31 |
US20150150384A1 (en) | 2015-06-04 |
US20180092467A1 (en) | 2018-04-05 |
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